111101220010020 has 48 divisors (see below), whose sum is σ = 311182582451328. Its totient is φ = 29617547581440.

The previous prime is 111101220010019. The next prime is 111101220010021. The reversal of 111101220010020 is 20010022101111.

It is an interprime number because it is at equal distance from previous prime (111101220010019) and next prime (111101220010021).

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 111101220009978 and 111101220010005.

It is not an unprimeable number, because it can be changed into a prime (111101220010021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 294948376 + ... + 295324815.

It is an arithmetic number, because the mean of its divisors is an integer number (6482970467736).

Almost surely, 2^{111101220010020} is an apocalyptic number.

111101220010020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111101220010020 is an abundant number, since it is smaller than the sum of its proper divisors (200081362441308).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

111101220010020 is a wasteful number, since it uses less digits than its factorization.

111101220010020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 590276340 (or 590276338 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 111101220010020 its reverse (20010022101111), we get a palindrome (131111242111131).

The spelling of 111101220010020 in words is "one hundred eleven trillion, one hundred one billion, two hundred twenty million, ten thousand, twenty".